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    checked the green check valves. They are ok....

    checked the green check valves. They are ok. Replaced the vacuum lines for those as well. Ran a few 2nd through 3rd gear pulls, touched 16psi and tapered to 14 psi. In 6th gear, going about 60 MPH,...
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    Jack, what is the operating difference in the...

    Jack, what is the operating difference in the fuel pressure gauge I posted, and the other styles you suggested?

    Also, what method do you use/recommend for checking for vacuum leaks?
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    Ok, so there's a plus. The ecu is correct for the...

    Ok, so there's a plus. The ecu is correct for the car as well. What do you charge too re-flash the ecu back to stock?
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    8D0 907 551 A is the top # on ecu

    8D0 907 551 A is the top # on ecu
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    What is FOD? haha. I'll run out and check the ECU...

    What is FOD? haha. I'll run out and check the ECU part number. Can you flash the ECU remotely?
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    MAF sensor: Bosch F 00C 2G2 040 MAF housing:...

    MAF sensor: Bosch F 00C 2G2 040
    MAF housing: Bosch D 280 218 038
    MAF housing VAG part number: 078 906 461 B

    VIN: WAUDD68D5YA139723
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    Okay, so you aren't necessarily saying I have the...

    Okay, so you aren't necessarily saying I have the wrong ecu, but the flash that I have is for the 01 s4? That makes sense and answered another question I had for you. I will Audi look up the...
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    You completely lost me with the last two posts,...

    You completely lost me with the last two posts, lol. Take it easy, I'm just trying to fix someone else's headache that I conveniently turned in to my own.


    When I get home tonight I'll grab the...
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    What method do you use to check for vacuum leaks

    What method do you use to check for vacuum leaks
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    Duo you have the regulator setup I can rent?

    Duo you have the regulator setup I can rent?
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    Would something like this be sufficient enough? ...

    Would something like this be sufficient enough?

    http://www.ecstuning.com/Audi-B5_S4--2.7T/Engine/Fuel/ES5701/
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    Okay. I have a new fuel filter. I've been...

    Okay. I have a new fuel filter. I've been dreading putting it in though because I'm afraid of something happening to the tank, straps, and fuel lines lol.

    Is there any other way to check fuel...
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    Crank pulley lined up with cover mark, larger...

    Crank pulley lined up with cover mark, larger holes facing inward, and can bar slides right in. Timing appears to be good.
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    Inspected under the boots top the coil packs,...

    Inspected under the boots top the coil packs, look great. No cracks, no corrosion. Looking in to checking the ground leads now.

    Also poked around with a cab of carb cleaner on all of the vacuum...
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    Had a few minutes today to monkey around. I went...

    Had a few minutes today to monkey around. I went into measuring blocks 15 and 16. At first, I was getting misfires on cylinder 4, around 10 of them. Cylinder 5 and 6 were 0-2 misfires. The longer the...
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    I was also flipping through the other measuring...

    I was also flipping through the other measuring blocks while idling in my driveway. I stopped on block 14 and watched the misfire detected reading. It went up to 4 or 5 and reset. I went up to block...
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    N75 valve was part of the problem. Here is the...

    N75 valve was part of the problem. Here is the log I took right after I installed the new N75. Still getting deviations. Boost gauge was peaking at 18-20, taper to 15-16.

    ...
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    Okay, just wanted to make sure we were on the...

    Okay, just wanted to make sure we were on the same page.

    No worries, I've learned more about diagnostics in the past two weeks than I ever knew prior lol, thank you for that. (My wife may say...
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    :confused:

    :confused:
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    Ok, so what are you saying? Are you thinking it...

    Ok, so what are you saying? Are you thinking it is a boost or vacuum leak?
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    Looks like I'll order one of those.

    Looks like I'll order one of those.
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    Before I put everything back together I wanted to...

    Before I put everything back together I wanted to check wastegate operation and check the n75 valve again. The wgs seem to open and hold with a 15 to 20psi blast of air into the line that comes off...
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    Jack, did you see another over-boost issue, other...

    Jack, did you see another over-boost issue, other than the log I posted last night? The over-boost that occurred last night happened right after the boost fell flat.

    I do have to ask, while doing...
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    is there an alternative way to check the coil...

    is there an alternative way to check the coil packs, other than what is listed in the manual?
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    OK, compression check done. I drove the car...

    OK, compression check done. I drove the car prior, got it up to operating temp. Parked in my garage (unheated) about 35 degrees outside. Sat for about 2 hours while I gathered tools and tore...
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